Finishing and polishing tool



Feb. 24, 1931. c. HELLING FINISHING AND POLISHING TOOL iled Oct. 26, 1929 tral position with respect to the ends on the cylindrical housing.

Extend'ng intoione end of the cylindrical, housing formed by the channel 6 and a'rcuate' :covenT, is a tubular shaft. 14 which passes I through the rockable bearings 8 and through the collar 10. This tubular shaft projects beyond the other end of the circular member and is exteriorily threaded, as shownat 15, for reception of a coupling member 29.

In view of the fact that the tubularshaft 14 is of considerable length,it is essential that be used.

the hearing be properly aligned to avoid undue wear and vibration ofthe shaft. There-- fore, I provide the pivotally mounted bearings 8, which the sha-ft14 v e One end of thefshaft 14 is connected to a flexible drive shaft 18 .by meansof the universal connection 19. WVhile Ihave described a universalconnection between the driving shaft and the tubular shaft, .it will be apparent-v that any other 'suitab'le connection may readily I align themselves with The forward endaof the liousing is nor- ,mally opened andit is apparent from the foregoing construction that polishing and finishing rolls can bedetachably connected to the outer end of the 'tiibular shaft 14. These rolls may be of different diameters and of diiferent'lengths, and'in order to provide for suitable suction to drawthe dust and "smaller particles upwardly into the bodyl, it is necessary to provide hoods for enclosing the difopposed flanges and embrace both of them. 1

One side of the U -shaped members 22 is provided with spaced-perforated ea-rs 23 and the side of the clamp carrying these ears has a slot 24 disposed directly between the ears.

- Pivotally mounted between the ears 23 is an engagingcam 25 having a handle portion 25 whereby this cam may be rocked upon its pivot and contact with one of the flanges 20' or 21 for securing the U-shaped members 22 in position and thus retain the hood upon the end ofthe body ,1. a,

'Theinteriorof the hood 19 communicates directly Withthe body 1 and thelQwerside of thehoodis pr-ovide'd with a longitudinal opening 27; The-outer end-of the hood is nor; malty closed by means of a: reinovablecap 28 which may be readily fitted-into the end oft-lie hood or engaged over the exterior thereof and provided with suitable means for detachably connecting the cap to the hood.

As previouslyexplained, the outer-end of the shaft 14 receives the internally threaded coupling 29 by means of which the abraiding or finishing rolls are attached. 7 As will be noted in Figure 1 of the drawings, the finishing rolls comprise a body portion 31 in which is secured a tubular core 30 projecting bew yondthe ends of the body portion and exteriorly threaded, .One end of the core 30 is threaded into the coupling 29,thus securing the roll to thejshaft 14.

In some instances, deep castingsfor other conditions require that the finishing roll 31 be extended somedistance from themain body 1, iir order that otherwise inaccessible parts of the castingmay be reached In such event, an extendedvcoupling 29 is utilized, and in order to provide the necessary rigidity between the finishingroll and-the shaft 14, the extension rod 34 is slidablyj mounted within the tube --14 and provided Iwith an; outer threaded'endf40, which isjsecured to an outer finishing. roll, as' will-be hereinafter described. I V l I 7 As best shown in Figure 1, the finishing rolls are formed; in .itwosections in order that a suitable-bearingma-y be provided for the same; This isaccomplished by the provision of an end roll 33 provided with a: core 38 threaded-upon'the outer end 39 of the core 30,- the core 38 also being-provided with a i restricted: threaded rec'ess40for reception of V the rod 34, Mounted on the core 30 between the rolls 33 and 31 is an anti-frictional hearing 36 which is carried in the beari'ngplate 37 loosely,n;iounted within the hood 19 and held against tippingvby the foot 37, which engages the'inner wallof the hood. 7

Thus it will be seenthat anystrai'nexerted upon the finishing roll, as-th e same is forced into contact-with the casting, will :be taken up by the bearing 36. This is very essential 31 where the rolls are extended, or. where anrexceeding'ly long roll is employechit-being understood that in such instances a longer hood is substituted for the, hood 19,.as heretofore described. J V a It will be'noted in Figure 1 that the rolls 33 and 31 are covered with any suitable abrasiveor' binding material 41, such as emery,

carborundum, or the like, and it will; also; be

noted that the end face of the roll33 is likewise covered, which permits such. base to be utilized upon flat work by removing the cover 28. VVhile the rolls 31 and 33 are covered in any suitable manner, it is proposed to Coat the same with a suitable adhesive, after which" abrasive material is their; exposed surfaces. e When. the polishing and finishing rolls or drumsare mounted. in-position Within the sprinkled over I hood 19, it will be noted that a portion thereof extends below the lower part of the hood and projects through the slot or opened lower portion 27 so that considerable surface on these polishing and finishing rolls will he exposed below the hood for contact with the casting, which is being operated upon.

It will be apparent from the foregoing that I. have provided a very simple and in expensive tool which .isespecially adapted for use in finishing off metal castings, and it will take the place of the hand sanding operation carried on at the present time in order to provide a comparatively smooth finish to the exterior of the casting.

7 As theconduit 3 is connected to a source of suction to draw the airthrough the body 1, it will be apparent that the passage of air will be through the opening or slot 27 of the hood 1%) and thus the air will be drawn up wardly carrying the particles, which are re moved from the casting, up through the hood, and thence to the body 1 and out through the conduit 3, where it may be con- Veyed to any suitable receptacle, thus removing the fine particles of the casting and the fine dust arising from the finishing and polishing operation so as to eliminate the necessity of the operator breathing these fine particles into their system. i

As stated heretofore, the hood 19 can be readily interchanged for hoods of different lengths in accordance with the length and size of finishing and polishing rolls to be used, and it will be noted that these hoods can be quickly interchanged through the medium of the clampingelement used.

In order to maintain the tubular bearing 8 in position, it will be noted that the cylindrical housing is formed at a point adjacent each end thereof with inwardly disposed flanges 42, and at each end of the members 8, I provide bearing discs 43, and between the discs 43 and the ends of the cylindrical housing and the flanges 42 are friction memhers 44; The cylindrical housing is preferably filled with a lubricant so that all rotative parts therein will bethoroughly lubricated and these friction members 44 at the ends of the bearings are preferably of a type which will maintain the lubricating fluid in the housing.

The device is not only simple in construction but is one which will be of substantial value as a labor saver in view of the fact that the sanding operation for metal castings can be very quickly and readily carried out by the use of this upkeep cost of the same is very inexpensive.

While I have shown and described the preferred embodiment of my invention, it will be apparent that slight changes may be made in the construction when putting the invention into practice Without departing from the spirit of the same or the scope of the appended claims.

ill

tool and the operating and lclainif :;m-

1. A tool of the class descrlbed including a tubular any, a cylindrical chamber at one side of the body, tubular. shaft passing through the cylindrical. chamber, rockablc bearings within the chamber for supporting theshaft, a rod mounted in the tubular shaft and projecting beyond the outer end thereof, a detachable hood at one end of the body, polishing rolls arranged within said hood,

and means forremovably mounting the polishing rolls upon the tubular shaft and rod with a portion thereof projecting beyondthe exterior of the hood. i 3

2. In a tool of the class describech a tubular body, a conduit connected to one end thereof, cylindrical housing at one side-10f the body, a= tubular shaftferitciided through the housing, rockable bearings for support ing said sl'ia-ft, a rod. within the shaft and projectingbeyond one end' thereof, polishing rolls, and means for detachably connecting the polishing rolls to theshaft and rod. l 3. A; tool'of the class described including a tubularbody, a conduit connected to one side thereof, a cylindrical housing at oneside of the body, a tubular shaft mounted in the housing and projecting beyond the end of the housing adjacent. the open endofthe body,{roclrable bearings for supporting said shaft within the housing,a hood. detachably oonnected to the open end of the body and having a longitudinal slot in :thelowerf side thereof, polishing rolls and lmeans for detachably connecting the polishing. rolls to the projecting end of the shaft with a por tion of the polishing rolls.projectingthrough the slot in the hood. p If 4. A tool ofthe class described including a tubular body, a conduitconnected to, one end thereof, a tubular shaft supported at one side of the body, a rod within said shafh a hood 'detachably connected to the end of the body opposite the conduit and having a longitudinal slot, a removable cap for the outer end of the hood, a bracket within the hood, a bearing supported by said bracket for receiving the outer end of the rod, polishing rolls, and means for detachably connecting the polishing rolls to the outer ends of the shaftand rodwhereby a portion of the polishing rolls will beexposed through the slot in the hood.

5. A tool of the class described including a hollow body, a conduit connected to one end thereof, a driven tubular shaft supported at one side of the body and parallel therewith, a rod mounted within the shaft and projectingbeyond one end thereof, a hood detachably connected to the end of the body opposite the conduit and formed with a longitudinal slot, a removable cap for the outer end of the hood, polishing rolls, and means for detach ably connecting the polishing rolls to the shaft and rod whereby a portion of said rolls are to be exposed through the slot inthe h0od.- 7 V Y 6; A tool oftheclass: described including a hollow body, a supporting handle at one. side-thereof, a=driven shaftat the other side, a conduit connected with one-end of, the body, a lateral flange at the other end of the'body, a a detachable hood having alateralflange to abutwt heflange of the body, a U-sh'apedclamp m engaging over said abutting-flanges, a cam member carried-by said U shaped. member for retaining said U-shaped' member in posi tion,:a polishing roll, and means. for detach.- ably connecting the polishing roll to one end of the shaftm a a V I 7. In a tool of the class described,.a tubular body, a suction conduit connected to oneend thereof, a cylindrical'housing carried by the I body, a tubular shaft extending through the 20 housing, rockable bearings forsupporting said'shaft, a rodwi'thin the shaft and projecting beyond one end thereof, a pair of spaced polishing rolls'connect'ed with said shaft,said rod'being slidably mounted Within said. shaft 7 v 25 and connected to the outer of said-rolls, a bearing positioned between said r01ls,; a11d a V hood connected: to said'housingfor surrounding a portion of said rolls.

-' 8. In a tool of the classdescribed, a 1101- ao low body, 'a su'cti-on conduit connected to one end thereoia hood connected to the oppo-f site"end thereof, 11183118 for clamping said- 7 hood to said body,fa shaft carried by said body, a coupling member secured to one end i 86 of said shaft', abrasive rolls carried by said coupling-member and positioned partially Within said hood, and a" bearingcarried by, said hood and positioned between said rolls. In testimony that I claim the foregoing I 4 have hereunto set my hand at" Milwaukee, in

the county. of Milwaukee, and Stateof VVisconsin; i I CHARLES HELLING. 

